123205625 has 20 divisors (see below), whose sum is σ = 158949120. Its totient is φ = 95370000.

The previous prime is 123205619. The next prime is 123205627. The reversal of 123205625 is 526502321.

It is not a de Polignac number, because 123205625 - 2¹⁸ = 122943481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123205594 and 123205603.

It is not an unprimeable number, because it can be changed into a prime (123205627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16196 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (7947456).

Almost surely, 2^123205625 is an apocalyptic number.

It is an amenable number.

123205625 is a deficient number, since it is larger than the sum of its proper divisors (35743495).

123205625 is an frugal number, since it uses more digits than its factorization.

123205625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410 (or 6395 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 123205625 is about 11099.8029261785. The cubic root of 123205625 is about 497.5959597058.

Adding to 123205625 its reverse (526502321), we get a palindrome (649707946).

The spelling of 123205625 in words is "one hundred twenty-three million, two hundred five thousand, six hundred twenty-five".